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http://dx.doi.org/10.7234/composres.2013.26.6.380

Characteristics of Delamination Factor and Surface Roughness by Drilling Condition for Glass Fiber Reinforced Plastic Composites  

Lee, Ok-Kyu (한국폴리텍대학 달성캠퍼스 자동화시스템학과)
Ahn, Dae-Keon (경상대학교 항공기부품기술연구소)
Choi, Jin-Ho (경상대학교 기계공학부 항공기부품기술연구소)
Kweon, Jin-Hwe (경상대학교 항공우주시스템공학과 항공기부품기술연구소)
Publication Information
Composites Research / v.26, no.6, 2013 , pp. 380-385 More about this Journal
Abstract
Characteristics of delamination factor and surface roughness by drilling condition for glass fiber reinforced plastic (GFRP) composites were investigated in this paper. An expression to quantify the delamination factor was induced by using image pixels of the entry and the experimental drilling was accomplished by fabricating several GFRP specimens in condition of minimizing the effect of vibration and heat. A method for measuring 6 points average surface roughness was applied to acquire the more reliable roughness values. The experimental results showed that the delamination factor was decreased as the feed rate was increased and it was also slightly decreased as the cutting speed was increased. Also, it was investigated that the surface roughness at inner surface of drilled holes was increased as the feed rate was increased, whereas the roughness values were not affected by the cutting speed variation.
Keywords
GFRP; delamination; drilling; feed rate; cutting speed; surface roughness;
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